With a possible valuation of $100 billion, Facebook's IPO filing could make a lot of people very, very rich (or richer). Here's a look at the breakdown of who could get what, from Mark Zuckerberg to Bono -- yes, Bono.

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Founder & CEO Mark Zuckerberg: $28 billion

Mark Zuckerberg, 27, was rich before Facebook's IPO, but now the Facebook founder and CEO becomes insanely rich. Thanks to his 28 percent stake in the company, Zuckerberg could be adding up to $28 billion to his bank account. Not too bad for a Harvard dropout.